The document discusses future sky mapping projects that will produce petabytes of astronomical data by 2010, including PanStarrs, the Large Synoptic Survey Telescope (LSST), and the Square Kilometer Array (SKA). It notes the rapidly increasing data rates from current and upcoming surveys like VISTA and how virtual observatory (VO) technologies will be needed to handle and analyze the deluge of data. The document is authored by Jonathan Tedds from the University of Leicester and copyright information is provided for various space agencies.